Cheapest return flights from Ontario to Las Vegas in May from $46

Best time to book flights for Ontario (ONT) to Las Vegas (LAS) flights at AirHint

AirHint found the following cheapest return flights from Ontario (ONT) to Las Vegas (LAS) in May 2025 (see full year).

Return flights

20 May - 21 May Frontier Airlines direct
06 May - 07 May Frontier Airlines direct
10 May - 13 May Frontier Airlines direct
21 May - 28 May Frontier Airlines direct
14 May - 21 May Frontier Airlines direct
17 May - 20 May Frontier Airlines direct
13 May - 14 May Frontier Airlines direct
10 May - 17 May Frontier Airlines direct
27 May - 30 May Frontier Airlines direct
18 May - 20 May Frontier Airlines direct
28 May - 02 Jun Frontier Airlines direct
29 May - 03 Jun Frontier Airlines direct
30 May - 02 Jun Frontier Airlines direct
30 May - 03 Jun Frontier Airlines direct
29 May - 01 Jun Frontier Airlines direct
28 May - 01 Jun Frontier Airlines direct
30 May - 01 Jun Frontier Airlines direct
30 May - 08 Jun Frontier Airlines direct
31 May - 05 Jun Southwest Airlines direct
30 May - 05 Jun Southwest Airlines direct

Also check the deals for one-way flights from Ontario to Las Vegas in May.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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